Holder for dusters and the like



Dec. 9, 1930.

H. HERTZBERG HOLDER FOR DUSTERS AND THE LIKE Filed May 8, 1928 Patented Dec. 9; 1930 UNITED STATES HARRY HERTZBERG, or BROOKLYN, NEW YORK I HOLDER FOR DUSTERS AND THE LIKE Application filed May 8, 1928. Serial No. 275,985.

between wires twisted about each other and in which these wires are shaped for rotatable ll attachment of the duster to handle.

invention consists in a novel combination and It is the object of this invention to provide a resilient connection between a duster of this type and a mop handle.

It is another object of the invention to provide ,a novel rigid and permanent connection of a journal adaptedto hold a mop frame rotatably connected to a resilient holder.

-With these and other objects in view the arrangement of parts hereinafter more fully specified and finally pointed out in the appended claims and illustrated in the accompanying drawings which form a material part of this disclosure and in which:

Fig. l is a front elevation of a twin duster rotatably held by a connector embodying the in ention. Parts of the coil 20 are shown in section on line 11 of Fig. 2 to show the interior connection.

' Fig. 2 is a side elevation of 1 partly in section on line 22 of that figure.

Fig. 3 is a sectional plan on line 33 of Fig. l.

Fig. 4 is a detail elevation of the upper part of a resilient connector illustrating the manner of forcing the journal stem into the same for clamping.

Fig. 5 is a side elevation of Fig. 4 partly in section on line 55 of that figure and showing the stem 11a partly entered into coil 20.

Fig. 6 is a detail perspective view of: one

half of a journal 11 with stem plate 11a.

' Figures 1 and 2 of the drawings show a twin mop head consisting of a pairof Wire rods 10 twisted about each other and bent to form two rings 10a extending in opposite direction from a central straight part 10b to have the generalshap'e of the letter S. The two rings 10a hold duster or mop cords or bristles 12 by the twists of the wires 10 while the straight part 10bbetween these rings is embraced by a hollow cylindrical journal 11 and adapted to rotate therein so that each one of duster rings 10a describes a sphere when rotated in journal 11. This journal which is preferably struck from heavy sheet metal is provided with a stem part 11a integral therewith and arranged perpendicularly to the j ournal axis. Stem 11a consists preferably of two plates which lie flat against each other. Journal 11 with stem plates 11a may either consist of a single piece of sheet metal as shown in Fig. 5 or be divided into two like pieces as shown in Figs. 2 and 6. The stem plates 11a have a narrow neck portion near the journal 11 at 116, a widenedbody portion at 110 providing a shoulder between 116 and 110 and a tapered end portion at 11d as illustrated in Figs. 1 4. and 6.

The stem plates 11a are driven by force into the helical coil 20 which is preferably I made of spring steel wire, the turns of the helix which surround plates 11a lie close against each other and form a tube which is expanded when the stem plates 11a are driven into it as shown in Figs. 1 and 4:.

When the tapered part 1161? enters into coil 20 as shown in Fig. 4 it gradually expands the turns of the coil so that the body portion 110 can pass into the coil. Any turn through which the shoulder between 110 and 116 has passed in its downward movement will again contract to nearly its original diameter, but will still exert a pressure against the four corners of 11?) as shown in Fig. 3 and press the adjoining flat faces of the stem plates 11a against each other. The action of the turns of the coil which press the plates 11a toward each other is illustrated in Fig.' 5 in which the stem is shown partly driven into coil 20.

When the stem 11a is fully driven into coil 20 as shown in Fig. 1 so that the horizontal journal portion 11 touches the first turnof the helix,'those turns of the coil which surround portion 110 remain expanded. The contracted turns surrounding neck 11?; prevent the removal of the stem from the coil and its rotation therein as they grip the stem plates much like a chuck, because the expanded turns of the helical coil exert a radial pressure against the enclosed plates.

The lower part of the helical coil 21 is of enlarged diameter and the turns of the helix are spaced apart to form a threaded socket for a commercial standard mop handle 13. A shoulder is formed within the helical coil by turn 22 to form a seat for the bottom of the mop stick.

By these simple means a very eflicient joint of the journal 11 to the resilient coil 20 is provided. The twin duster can rotate within the journal 11 and may simultaneously be deflected from its normal position on the mop stick axis in all directions radiating therefrom which increases the usefulness of the device in many ways.

' Having thus described my invention what I claim as new and desire to secure by Letters Patent is: n

1. A holder for dusters or the like consisting of a helical coil, the turns of said coil forming means for holding a handle in the hollow part of said coil at one of its ends, a journal adapted to hold a duster frame for rotation therein at the other end of said coil and a stem on said journal mounted within the turns of said coil and a shoulder on said stem for locking said journal permanently to said coil.

2. A holder for dusters or the like, consisting of a helical coil forming means for holding a handle in its hollow part at one end thereof and a stem adapted to join a mop head to said coil extending into the opposite end of said coil and engaging a plurality of turns thereof, said stem having a wide body portion and a narrower neck portion, said body portion providing means to expand some of the turns of said coil, the turns surrounding said neck portion providing means to lock said stem against removal from 'said coil.

3. A holder for dusters and the like consisting of a helical coil forming means for holding a handle in its hollow part at one end thereof, and a stem consisting of parallel plates adapted to join a mop head to said coil, said plates extending into the opposite end of said coil having a body portion holding some of the turns of said coil in expanded condition and a tapered end portion on each plate forming means to gradually expand the turns of said coil laterally when entering into said hollowpart.

Signed at Brooklyn, in the county of Kings and State of New York, this 4th day of May,

, HARRY HERTZBERG. 

